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view target-utils/c139-lldbg/entry.S @ 39:280826b807e3
c139explore: dac and dacon commands added for exercising the vibrator
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 26 Oct 2016 01:53:12 +0000 |
parents | e7502631a0f9 |
children |
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.text .globl _entry _entry: .code 16 bx pc nop .code 32 stmfd sp!, {r0-r12,lr} mrs r0, CPSR mov r1, sp /* supervisor mode, disable all interrupts */ msr CPSR_c, #0xd3 ldr sp, =stack_bottom /* save entry SP and CPSR */ ldr r2, =lldbg_entry_cpsr str r0, [r2] ldr r2, =lldbg_entry_sp str r1, [r2] b main